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10-03-2006
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#1 |
Join Date: Aug 2006
Location: Sweden
Posts: 95
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A bunch o Q:s from a new owner
Ok, I had the car (’92 ZR-1) for a week now and a number of questions are piling up.
 Hoping you can dig into your vast experience and help a rookie out:1 The car has been considerably lowered which makes it hard to drive on regular Swedish roads. Can someone on a step-by-step basis please explain how to get it back to stock height? (Or advice a link). With the car came (a loose) what I believe is the original spring (black glassfibre blade – front or rear?) This is my first Vette so please explain in the simpliest way possible.  2 Ride control. Changing from Tour to Sport to Performance doesn’t seem to make any difference. How big is the ride quality difference? Should I notice it beyond any doubt? I’m not having any warnings on the Info Center. What could be wrong if it doesn’t work? In fact – the car is so hard on the road it feels as if it has no suspension at all! Any connection to the car being lowered? 3 Service LTPWS comes on after some half hour ride and goes out again when engine is stopped. Why? What to do? What kind of service? The tire pressure seems ok. I’m about to change wheels/tires. Should I skip the LTPWS sensors on my new wheels? How would the car react to that? (I’ve understood that the sensors can be a real danger if they come loose at high speeds) 4 I’ve spotted a rather deep dent in the left exhaust tube just where it bends outwards in front of the rear axle. Looks like a bottle neck performance wise. System otherwise in good condition. Any hints on how to get this dent out again? Enough with the whining – the car is just awesome to drive, beautiful to look at and has the sexiest sound (competing pretty successfully with the purr of my wife)! I’m in love...  Most greatful for any tips on my technical questions.  Peter PS, I’ve been trying to search the forum for answers, but the search functions seem dead to me ..... 
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'92 ZR-1, black on black, mostly stock (sold) |
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10-03-2006
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#2 | |
 
Join Date: Oct 2004
Location: Woods Cross, UT
Posts: 389
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Re: A bunch o Q:s from a new owner
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Does the car now have Coil over shocks now? It sounds like it has coil overs. If that is the case...they can be adjusted quite a bit to change your ride height and ride quality. if you want to remove the coil overs (or the non-stock spring...the rear is easy to remove and replace...just loosen the bolts slowly with the weight off of the wheels. The front is more difficult. You need to get a Factory Service Manual for starters anyway. (http://www.helminc.com/helm/Result.a...VA2RP3RGJ865Q6) Ride control. Changing from Tour to Sport to Performance doesn’t seem to make any difference. How big is the ride quality difference? Should I notice it beyond any doubt? I’m not having any warnings on the Info Center. What could be wrong if it doesn’t work? In fact – the car is so hard on the road it feels as if it has no suspension at all! Any connection to the car being lowered? The ride quality difference is pretty slight but over time you will notice the difference. If you have coil overs...the differenc emay be hard to tell if it is set up really stiff. The light bulb could also be blown. Does the light come on when you turn the key on? Service LTPWS comes on after some half hour ride and goes out again when engine is stopped. Why? What to do? What kind of service? The tire pressure seems ok. I’m about to change wheels/tires. Should I skip the LTPWS sensors on my new wheels? How would the car react to that? (I’ve understood that the sensors can be a real danger if they come loose at high speeds) A lot of people have removed the system from their cars. This is probably a good idea if you do some high speed driving (140+). I have removed mine for fear of the band breaking at high speed and loosing control of the car. I have had one come loose at like 90 MPH....not pleasant. I know of someone else that lost one at ~150....not nice. If the light bothers you....remove the bulb for the LTPWS. I’ve spotted a rather deep dent in the left exhaust tube just where it bends outwards in front of the rear axle. Looks like a bottle neck performance wise. System otherwise in good condition. Any hints on how to get this dent out again? No idea how to get the dent out again...except by replacing the stock exhaust with an aftermarket one or by cutting the pipe and welding in a new piece. I would opt for the aftermarket exhaust and of course headers...and aftermarket cats if you need them. Great modification! Best of luck with your newfound pleasure in the ZR-1...Long live the BEAST! Uly
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Uly Past OWNER 90 ZR-1 #0120 Red/Saddle UT Plate: EZR1DER |
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10-03-2006
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#3 |
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Join Date: Aug 2006
Location: Sweden
Posts: 95
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Re: A bunch o Q:s from a new owner
Thank's for the exhaustive answer Uly. Could you just explain "coil over shocks". Does it mean coil springs around the shocks? Cause in that case the answer is no. The shocks have no coils around them, not front, nor rear.
Peter
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'92 ZR-1, black on black, mostly stock (sold) |
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10-03-2006
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#4 | |
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Join Date: Oct 2004
Location: Woods Cross, UT
Posts: 389
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Re: A bunch o Q:s from a new owner
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That's correct. The shocks would have coils around them. You can definitely do the rear spring by yourself...but the front is a bigger job. It is best done using a service manual. Here's a couple of links that will help. http://corvetteforum.com/techtips/vi...=138&TopicID=2 http://corvetteforum.com/techtips/vi...=194&TopicID=2 Uly
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Uly Past OWNER 90 ZR-1 #0120 Red/Saddle UT Plate: EZR1DER |
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10-03-2006
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#5 |
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Join Date: Aug 2006
Location: Sweden
Posts: 95
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Re: A bunch o Q:s from a new owner
Thank's again Uly. I'll study the articles and I already ordered the manual you linked me to.
 Peter
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'92 ZR-1, black on black, mostly stock (sold) |
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10-05-2006
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#6 |
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Join Date: Jan 2004
Location: Southern CA
Posts: 108
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Re: A bunch o Q:s from a new owner
2. Ride Control: This is my opinion based on my 90. The difference between the three settings is very noticeable on rougher roads like I typically drive on here in Southern California. There is a substantial difference in the ride quality and how far the car moves up and down over some of the dips and bumps. The car seems to float and move substantially more in the touring setting while the car moves very little in the performance setting. While in the touring setting it is even easy to notice the change in ride quality when the computer changes the shock setting between 60 and 70 mph when driving on the rough freeways here. I very rarely use anything other than the touring setting here because most of the roads are so rough.
On good smooth roads the difference between the three settings is much less noticeable but you can still tell the difference over larger undulations in the road and when cornering. |
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10-05-2006
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#7 |
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Join Date: Aug 2006
Location: Sweden
Posts: 95
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Re: A bunch o Q:s from a new owner
Hmm... Sounds like mine needs a check. Most bigger roads in Sweden are pretty decent, but when I pass some sharp bump (like entering a bridge slightly higher than the road surface) there is a violent shock through the car. Like it had no shocks or suspensions at all.
 There seem to be no difference whichever ride control setting I use.I guess I'll start with checking if the warning light is ok and work my way from there. Peter
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'92 ZR-1, black on black, mostly stock (sold) |
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